Rammer



D, C. MULVIHILL.

HAMMER.

APPLICATION FILED JULY 3, l9l9.

1,330,086. Patented Feb.10,1920.

'zsHEETs-SHEET 1.

Inyefzar:

D. C. MULVIHILL.

HAMMER.

APPLICATION FILED IULY3. 1919.

l ,330,086. Patented Feb. 10, 1920.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEIoE.A

DANIEL C. MULVIHILL, or HANNIBAL, MISSOURI.

RAMMER.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application led .Tuly 3, 1919. Serial No. 308,555.

vision of a rammer or weight which may be placed upon the top of a cope,such as disclosed in a copending application filed by me June 23, 1919,for a mold forming apparatus, Serial No. 306,050, and which is alsodescribed in said application. The object of the rammer is'to obviatethe necessity of hand tamping or repressing the sand in the portions ofthe cope referred to bel tween the partitions or bars therein disclosed.

In the accompanying drawings: Figure 1 is a plan view of the device;Fig. 2 is a section taken on the line 2 2 of Fig. 1; Y

Fig. 3 is a side view of the device seated upon the table of a joltingmachine; and

Fig. 4 is a bottom plan view of the ram- VThe invention is illustratedin connection with the molding of car wheels, and 10 of Fig. 3represents the table of any usual type of jolting machine. 11 is thebase of a stripping plate, the details of which are disclosed in mycopending application above referred to. 12 is a stripping ring for usewith such plate, and 13 designates steady pins placed throughprojections 14 on the chill 15 which forms a part of the cope. 16 is theinternal ring of the cope, saidcope comprising ring 16, an innerpring17, and partitions or bars 1,8. These bars, as well as ring 17, arepreferably chamfered at their lower edge, as indicated at 19 and 20,Fig. 2.

' The urpose of the bars or partitions is the `division of the sand intosmaller masses which may be compacted sufcientl to prevent drops whenthe form is lifte At 21 is indicated a gate-forming implement, thedetails of which are disclosed in my copendn ing application abovereferred to. A weight or rammer, as 22, which forms the specialsubject-matter of the present invention, may take the form illustratedin Figs. 2 and 4. When so constructed the rammer comprises an annularring, as 23, with blocks, preferably of wood, as 24, secured to itslower sur# face, as by screws 25. The blocks are so located `andproportioned as to size as to leave channels, as 26, between them whense cured to the ring, which channels, when the When the cope is placedupon the jolting machinev and filled with sand, and the ram* mer placedupon the top of the cope, it will, by the mere action of the joltingmachine, compact the sand sufficiently so that the mold may be strippedfrom the pattern and lifted successfully without the occurrence ofdrops.

I claim as my inventionn l. `The combination of a cope having barsseparating the space within the cope into compartments, a weight havingprojections thereon adapted to enter said compartments and compactv thesand when i thek cope is jolted. v

2. The combination of a cope divided into compartments open at the top,and a weight having projections adapted to enter said compartments andcompact the sand therein.

3. A weight comprising an upper weighting member, and projections onsaid member separated from each other adapted to enter compartments of acope.

4. A rammer comprising an annular weighting ring, blocks secured to thelower surface of said ring, said blocks separated i from each otherforming channels adapted leave channels between they blocks, suchchannels adapted to fit overthe bars of a cope.

DANIEL c. MULvIHILL.

